QBM019

Q1. If the work done by (x-1) men in (x+1) days is to the work done by (x+2) men in (x-1) days is in the ratio 9 : 10, then the value of x is Q2. One year ago the ratio between Laxman’s and Gopal’s salary was 3 : 4. The ratios of their individual salaries between last year’s and this year’s salaries are 4 : 5 and 2 : 3 respectively. At present the total of their salary is Rs 4160. The salary of Laxman now, is: Q3. Rs 385 has been divided among A, B, C in such a way that A receives 2/9th of what B and C together receive. Then, A’s share is: Q4. Five apples and 4 pears cost as much as 7 pears and 3 apples. Find out the ratio of the cost of one apple to the cost of one pear Q5. Calculate the weight and the percentage of zinc in the zinc-copper alloy being given that the latter’s alloy with 3 kg of pure zinc contains 90 per cent of zinc and with 2 kg of 90% zinc alloy contains 84% of zinc. Q6. The average age of 3 girls is 20 years and their ages are in the proportion 3 : 5 : 7. The age of youngest girl is: Q7. 94 is divided into two parts in such a way that fifth part of the first and eighth part of the second are in the ratio 3 : 4. The first part is: Q8. A person covers half of his journey from delhi to Mathura by terrain at 60 km/hr. Half the remainder by bus at 30 km/hour and rest by cycle at 10 km/hr. Find the average speed during the entire journey? Q9. The ratio of marks obtained by vinod and Basu is 6:5. If the combined average of their percentage is 68.75 and their sum of the marks is 275, find the total marks for which exam was conducted. Q10. The ratio of boys to girls at a school disco is 9:10. An extra 17 boys arrive and the ratio changes to 8:7. How many girls are there at the disco? Q11. Three jackals P , M and T together have 675 loaves of bread. P has got three times as M but 25 loves more than T. How many does T have ? Q12. Two solutions of 90% and 97% purely are mixed resulting in 21 lts. Of mixture with 94% purity. How much is the quantity of the first solution in the resulting mixture? a. 10lts b. 15lts c. 9lts d. None